A Novel Precipitation-Hardened Medium-Entropy Alloy with Excellent Tensile Properties

被引：0
|
作者：
Desetti, Sujatha [1 ]
Nagini, M. [1 ]
Babu, D. Arvindha [2 ]
Palguna, Yasam [1 ]
Rajesh, Korla [1 ]
Murty, B. S. [1 ]
机构：
[1] Indian Inst Technol Hyderabad, Dept Mat Sci & Met Engn, Kandi 502284, Telangana, India
[2] Def Met Res Lab, Adv Magnet Grp, Kanchanbagh, Hyderabad 500058, Telangana, India
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2025年 / 56卷 / 02期
关键词：
MECHANICAL-PROPERTIES; CHEMICAL SEGREGATION; HEAT-TREATMENT; AS-CAST; STRENGTH; BEHAVIOR;
D O I：
10.1007/s11661-024-07650-y
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work, we report a newly developed gamma-gamma '-strengthened Ni-Co-Cr-Al-Ti-based medium-entropy alloy (MEA) with a low density of 7.84 g cm(-3), designed based on the CALPHAD approach for turbine disk applications. The alloy exhibits coarsened gamma ' precipitates with an average diameter of 285 +/- 70 nm and irregular eutectic (gamma + gamma ') phases in the interdendritic region in the as-cast condition. In contrast, fine gamma ' precipitates with an average diameter of 154 +/- 26 nm are uniformly distributed in the dendritic region. The alloy demonstrates outstanding tensile properties, including a yield strength of 833 +/- 4 MPa, ultimate tensile strength of 1080 +/- 14 MPa, and ductility of 22 +/- 2 pct in the as-cast condition. Due to its low density and high specific yield strength (106 MPa g(-1) cm(-3)), this alloy has the potential to be a viable alternative to Waspaloy and other nickel-based superalloys. [GRAPHICS] .
引用
收藏
页码：415 / 423
页数：9
相关论文
共 50 条
  • [1] Precipitation-hardened high entropy alloys with excellent tensile properties
    Zhang, Lu
    Zhou, Yang
    Jin, Xi
    Du, Xingyu
    Li, Bangsheng
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2018, 732 : 186 - 191
  • [2] A precipitation-hardened high-entropy alloy with outstanding tensile properties
    He, J. Y.
    Wang, H.
    Huang, H. L.
    Xu, X. D.
    Chen, M. W.
    Wu, Y.
    Liu, X. J.
    Nieh, T. G.
    An, K.
    Lu, Z. P.
    ACTA MATERIALIA, 2016, 102 : 187 - 196
  • [3] Extra Strengthening and Work Hardening in Novel Precipitation-Hardened FeCrNiSix Medium-Entropy Alloys
    Bai, Tianxiang
    Zhang, Tuanwei
    Ma, Shengguo
    Zhao, Dan
    Wang, Zhihua
    ADVANCED ENGINEERING MATERIALS, 2021, 23 (04)
  • [4] High compressive property of precipitation-hardened Fe75(CoCrMnNi)25 (at.%) medium-entropy alloy
    Saputra, Eka Bobby
    Hong, Sung Hwan
    Park, Nokeun
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2020, 782
  • [5] Kinetics of tensile deformation in a precipitation-hardened aluminum alloy
    Chandler, H.D.
    Gortzen, J.-N.
    Materials Science and Engineering A, 1994, A188 (1-2) : 97 - 102
  • [6] KINETICS OF TENSILE DEFORMATION IN A PRECIPITATION-HARDENED ALUMINUM-ALLOY
    CHANDLER, HD
    GORTZEN, JN
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1994, 188 (1-2): : 97 - 102
  • [7] DIRECTIONALITY IN A PRECIPITATION-HARDENED ALLOY
    JOBSON, P
    ROBERTS, WT
    METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1977, 8 (12): : 2013 - 2014
  • [8] Manipulation of precipitation and mechanical properties of precipitation-strengthened medium-entropy alloy
    Lv, Jiwei
    Yu, Haoyang
    Fang, Wei
    Yin, Fuxing
    Wei, Daixiu
    SCRIPTA MATERIALIA, 2023, 222
  • [9] A new strategy for designing immiscible medium-entropy alloys with excellent tensile properties
    Moon, Jongun
    Park, Jeong Min
    Wung, Jae
    Do, Hyeon-Seok
    Lee, Byeong-Joo
    Kim, Hyoung Seop
    ACTA MATERIALIA, 2020, 193 (193) : 71 - 82
  • [10] CREEP IN A PRECIPITATION-HARDENED ALLOY
    DAVIS, M
    THOMPSON, N
    PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON SECTION B, 1950, 63 (371): : 847 - 860
12345